﻿/*
 * Copyright (C) 2011, EADS France
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * Author: Laurent WOUTERS
 */

using System;
using System.Collections.Generic;
using System.Text;

namespace xowl.gmi.compiler.transform
{
    class Context
    {
        private Dictionary<string, PatternVariable> variables;

        public Context()
        {
            variables = new Dictionary<string, PatternVariable>();
        }

        public PatternVariable Resolve(string name)
        {
            if (variables.ContainsKey(name))
                return variables[name];
            PatternVariable var = new PatternVariable(name.Substring(1));
            variables.Add(name, var);
            return var;
        }
    }
}
